Valve for pneumatic tires.



.I. W. TAYLOR.

VALVE FOR PNEUMATIC TIRES.

APPLICATION FILED 0012-20, 1913.

1 1 08,640., Pa g g. 25, 1914.

ATTORNEYS xiii W UNITED ,s rarns rarnnr enrich JAMES WALTER TAYLOR, 0FLANSING, MICHIGAN, ASSIGNOR 0F ONE-THIRD T0 GEORGE A. MQHR AND ONE-THIRDT0 FEED L. FULTON, BOTH 0F LANSING,

MICHIGAN.

VALVE-FOB. BNEATIC' TES.

Specification of Letters latent.

' Patented Aug. 25, ildild,

To all whom.- it may concern:

Be it known that l, JAMEs WALTER TAY- non, a citizen of the UnitedStates, and resident of Lansing, in the county of lngham and StateofMichigan, have invented an improvement in Valves for Pneumatic Tires, ofwhich the following is a specification.

My present invention relates to a valve for pneumatic tires, my objectbeing to provide certain means by which to eliminate the danger ofleakage and preserve and hold the flexible gaskets or washers utilizedtherein.

in the accompanying drawing, which illustrates my invention, Figure 1,is a side elevation of my improvements illustrating their practicalapplication. Fig. 2, is a central vertical section taken therethrough.Fig. 3, is a detail cross section taken substantially on line 33of Fig.2, and Fig. 4, is a perspective view of the conical gasket removed.

Referring now to these, figures the valve stem A is of substantially theusual form, being threaded throughout the major portion of its lengthand having a fiat circular enlargement or flange a at its inner endwhich bears against the inner peripheral portion of the tire indicatedat B.

A- nut or bur C is threaded for engagement upon the inner projectingportion of the valve tube or stem A and is provided upon its inner facewith a groove 0 surrounding its bore, this groove being adapted toreceive a flat circular face D which surrounds the valve stem or' tube Aand is forced against the inner peripheral surface of the rim E by meansof the nut or bur C, the grooved inner face of the latter leaving asurrounding retaining ring which supports and holds the washer D firmlyin position and prevents the same from spreading.

Extending inwardly from its outer face and surrounding the outer end ofits threaded bore, the nut or bur C is provided with a conical recess 0which receives the lower smaller end of a conical gasket F adapted tosurround the valve stein or tube A as particularly shown in Figs. 2 and3 and the upper enlar end of whichis engaged within the grooved innerend of an internally threaded thimble Gr adapted for engagement upon theexposed end of the valve tube and the grooved inner face of which thusforms a retaining ring 9 surrounding the gasket F to revent the latterfrom spreading. Thus by tightly screwing the nut or bur C against theinner face of the rim E, washer D is firmly and evenly seated and held.in like manner by screwing the thimble G onto the outer portion of thevalve tube or stem A to a desired extent, the lower smaller end of theconical gasket F is forced into firm and even contact with the outersurface of the valve stem or tube by virtue of its movement within theconical recess of the nut or bur C, it being noted that the retainingring 9 of the thimble G holds the gasket F against spreading and thatthe said gasket creates a tension upon the thi'mble G at all times toprevent the latter from working loose. In this manner I prevent leakage.around the valve tube or stem A, utilizing such means as will alsoassist in preventing leakage from the thimble G, such means be ing inthe form of a conical gasket, the actionof which depends upon thecooperation of the nut or bur C and the thimble Gr.

It is to be noted by comparison of Figs; 2 and 3 that the valve stem Adsprovided with diametrically opposite flattened portions extendinglongitudinally thereof, and which coiip'erate with diametrically opposedfiat faces of the bore of the gasket F, the engagement of these partsbeing particularly shown in Fig. 3, the purpose of which is to resisttendency of the gasket to rotate when the thimble G is screwed inwardlythereagainst. Byth'is means the gasket is forced into tightly sealedposition by a wholly longitudinal movement thereof.

I claim The combination of a threaded valve tube, a nut or bur threadedon the valve stem and having a ooved inner face, a washer extendingwithin the groove and'ada ted to bear a ainst a wheel rim and the llke,the bore of said nut or bur being enlarged at its opposite end to form aconical recess at the till outer face thereof, a flexible conical gasketbur Lforming retaining rings to respectively having its inner endprojecting withm the prevent the gasket and the washer from 'conicalrecess of the nut 01' bur, and a spreading, all for the purposedescribed. thimble threaded upon thevinner end ,of the JAMES WALTERTAYLOR.

velve stex'ii and having a grooved inner face Witnesses:

receiving the enlarged end of the gasket, the CHARLES F. HAIGHT, saidgrooved faces of the thimble and nut or ELIAS C. MARTIN.

